Microplastic additions modulate intraspecific variability in root traits and mycorrhizal responses across root-life history strategies

Microplastics (MP) are recognized as a major pollutant in terrestrial environments, prompting concerns regarding their effects on plant-soil dynamics. Despite evidence of MP altering soil physicochemical properties, impacts on belowground root traits and arbuscular mycorrhizal (AM) fungi remains poorly explored. Existing research has mainly centered on a few model plant species, emphasizing root biomass, and often employs single polymer types and addition rates that surpass realistic scenarios. 
To investigate how environmentally relevant mixtures and concentrations of MPs impact plant growth, root trait expression and AM fungal colonization, we conducted a greenhouse experiment using six plant species chosen for their contrasting root life strategies; three species in the Amaryllidaceae family represented resource conservation root traits (Allium fistulosum (Onion), Allium tuberosum (Chive), Allium porrum (Leek)), and three from the Solanaceae family, represented plants with resource a..., , , # Microplastic additions modulate intraspecific variability in root traits and mycorrhizal responses across root-life history strategies

[https://doi.org/10.5061/dryad.6t1g1jx7f](https://doi.org/10.5061/dryad.6t1g1jx7f)

### Summary of Experimental Efforts

This dataset underlies research on the impact of microplastic (MP) additions on root traits and mycorrhizal associations in different plant species. The study examined how microplastics influence the root traits such as root tissue density (RTD), specific root length (SRL), average root diameter (D), and arbuscular mycorrhizal fungal (AMF) colonization across various plant families, specifically Amaryllidaceae and Solanaceae. The research involves both control and experimental conditions with low and high levels of microplastic amendments.

## Files and variables

### 1. **RStudio-2024-FunctionalEcology.pdf** (Software):

* This file contains the R code used for data analysis and visualization.
* Key functions used include Principal...

微塑料（Microplastics, MP）已被认定为陆地环境中的主要污染物，引发学界对其影响植物-土壤动态的广泛担忧。尽管已有研究证实微塑料可改变土壤理化性质，但针对其对地下根系性状及丛枝菌根（arbuscular mycorrhizal, AM）真菌的影响，目前仍缺乏深入探索。现有研究多聚焦于少数模式植物物种，核心观测指标多为根系生物量，且通常仅采用单一聚合物类型及远超自然环境实际水平的添加浓度。

为探究符合环境现实浓度与混合配比的微塑料如何影响植物生长、根系性状表达及丛枝菌根真菌定殖情况，本研究开展温室盆栽实验，选取6种根系生活史策略迥异的植物作为实验材料：其中3种隶属于石蒜科（Amaryllidaceae），代表资源保守型根系性状，分别为葱（Allium fistulosum, Onion）、韭（Allium tuberosum, Chive）以及韭葱（Allium porrum, Leek）；另外3种隶属于茄科（Solanaceae），代表资源获取型根系性状。

# 微塑料添加调控不同根系生活史策略下植物根系性状与菌根响应的种内变异

[https://doi.org/10.5061/dryad.6t1g1jx7f](https://doi.org/10.5061/dryad.6t1g1jx7f)

### 实验工作概述
本数据集支撑的研究聚焦于微塑料添加对不同植物物种根系性状及菌根共生关系的影响。实验考察了微塑料对以下指标的影响：根系组织密度（root tissue density, RTD）、比根长（specific root length, SRL）、平均根直径（D）以及丛枝菌根真菌（arbuscular mycorrhizal fungi, AMF）定殖率，实验涵盖石蒜科与茄科两个植物类群。本研究设置对照组与低、高浓度微塑料添加实验组。

## 文件与变量

### 1. **RStudio-2024-FunctionalEcology.pdf**（软件文档）：
* 该文件包含用于数据分析与可视化的R代码。
* 所用核心分析函数包括主成分分析（Principal...）等。